{"id":92114,"date":"2020-08-23T19:41:56","date_gmt":"2020-08-23T17:41:56","guid":{"rendered":"https:\/\/prohoster.info\/blog\/administrirovanie\/realizacziya-rolevoj-modeli-dostupa-s-ispolzovaniem-row-level-security-v-postgresql"},"modified":"2020-08-23T19:41:56","modified_gmt":"2020-08-23T17:41:56","slug":"realizacziya-rolevoj-modeli-dostupa-s-ispolzovaniem-row-level-security-v-postgresql","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sq\/blog\/administrirovanie\/realizacziya-rolevoj-modeli-dostupa-s-ispolzovaniem-row-level-security-v-postgresql","title":{"rendered":"Implementimi i modelit t\u00eb rolit p\u00ebr aksesin duke p\u00ebrdorur Sigurin\u00eb n\u00eb Nivelin e Rreshtave n\u00eb PostgreSQL","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Zhvillimi i tem\u00ebs Studimi mbi implementimin e Siguris\u00eb n\u00eb Nivelin e Rreshtit n\u00eb PostgreSQL<\/a><\/noindex> dhe p\u00ebr nj\u00eb p\u00ebrgjigje t\u00eb holl\u00ebsishme<\/b> n\u00eb koment.<\/a><\/noindex><\/p>\n

Strategjia e p\u00ebrdorur n\u00ebnkupton p\u00ebrdorimin e konceptit \"Logjika e biznesit n\u00eb DB\", e cila \u00ebsht\u00eb shpjeguar pak m\u00eb gjer\u00eb k\u00ebtu \u2014 Studimi mbi realizimin e logjik\u00ebs s\u00eb biznesit n\u00eb nivelin e funksioneve t\u00eb pagabueshme PostgreSQL<\/a><\/noindex><\/p>\n

Pjesa teorike \u00ebsht\u00eb e shkruar shum\u00eb mir\u00eb n\u00eb dokumentacion Postgres Pro<\/a><\/noindex> \u2014 Politikat e mbrojtjes s\u00eb rreshtave<\/a><\/noindex>. M\u00eb posht\u00eb shikohet realizimi praktik i nj\u00eb problemi konkret t\u00eb biznesit \u2014 modeli i rolit t\u00eb aksesit n\u00eb t\u00eb dh\u00ebna.<\/b><\/p>\n

\"Implementimi<\/p>\n

N\u00eb artikull nuk ka asgj\u00eb t\u00eb re, nuk ka kuptim t\u00eb fshehur dhe njohuri sekrete. Thjesht nj\u00eb skic\u00eb mbi realizimin praktik t\u00eb nj\u00eb ideje teorike. N\u00ebse dikujt i intereson \u2014 lexoni. N\u00ebse nuk intereson \u2014 mos e humbni koh\u00ebn tuaj kot.<\/p><\/blockquote>\n

<\/a><\/noindex><\/p>\n

Vendosja e detyr\u00ebs<\/h2>\n

\nDuhet t\u00eb ndahen qasjet p\u00ebr shikimin \/ futjen \/ ndryshimin \/ fshirjen e dokumentit n\u00eb p\u00ebrputhje me rolit t\u00eb p\u00ebrdoruesit t\u00eb aplikacionit. Nga roli n\u00ebnkuptohet nj\u00eb regjist\u00ebr n\u00eb tabel\u00ebn roles<\/b> e cila ka nj\u00eb lidhje shum\u00eb-te-many me tabel\u00ebn p\u00ebrdoruesit<\/b>. Detajet e realizimit t\u00eb tabelave, p\u00ebr shkak t\u00eb thjesht\u00ebsis\u00eb, jan\u00eb l\u00ebn\u00eb m\u00ebnjan\u00eb. Gjithashtu jan\u00eb l\u00ebn\u00eb jasht\u00eb detajet e sakta t\u00eb realizimit q\u00eb lidhen me fush\u00ebn e subjektit.<\/p>\n

Realizimi<\/h2>\n

<\/p>\n

Krijojm\u00eb Role, Skema, Tabel\u00ebn<\/h4>\n

<\/p>\n

Krijimi i objekteve t\u00eb DB<\/b><\/p>\n

CREATE ROLE store;\nCREATE SCHEMA store AUTHORIZATION store;\nCREATE TABLE store.docs\n(\n  id integer ,         --id i dokumentit\n  man_id integer , --id i menaxherit t\u00eb dokumentit\n  stat_id integer ,  --id i statusit t\u00eb dokumentit\n  ...\n  is_del BOOLEAN DEFAULT FALSE \n);\nALTER TABLE store.docs ADD CONSTRAINT doc_pk PRIMARY KEY (id);\nALTER TABLE store.docs OWNER TO store ;\n<\/code><\/pre>\n
<\/p>\n
Krijojm\u00eb funksione p\u00ebr realizimin e RLS<\/h4>\n
\nKontrolli i mund\u00ebsis\u00eb p\u00ebr t\u00eb kryer SELECT n\u00eb rresht<\/p>\n
                        check_select<\/b><\/p>\n
CREATE OR REPLACE FUNCTION store.check_select ( current_id store.docs.id%TYPE ) RETURNS boolean AS $$\nDECLARE\n  result boolean ;\n  curr_pid integer ;\n  curr_stat_id integer ;\n  doc_man_id integer ;\nBEGIN \n  -- DBA ka akses t\u00eb gjith dokumentet\n  IF SESSION_USER = 'curr_dba'\n  THEN\n    RETURN TRUE ;\n  END IF ;\n  --------------------------------\n\n  --N\u00ebse dokumenti ka etiket\u00ebn 'i fshir\u00eb' - mos e tregoni n\u00eb p\u00ebrzgjedhje\n  SELECT\n    is_del\n  INTO\n    result\n  FROM\n    store.docs\n  WHERE\n    id = current_id ;\n IF result = TRUE\n THEN\n   RETURN FALSE ;\n END IF ;\n --------------------------------\n\n --Merrni id e p\u00ebrdoruesit aktual\n SELECT\n   service_function.get_curr_pid ()\n INTO\n   curr_pid ;\n --------------------------------\n\n --Merrni id e menaxherit t\u00eb dokumentit\n SELECT\n   man_id\n INTO\n   doc_man_id\n FROM\n   store.docs\n WHERE\n   id = current_id ;\n --------------------------------\n\n --N\u00ebse menaxheri i dokumentit nuk \u00ebsht\u00eb p\u00ebrdoruesi aktual ose menaxheri nuk \u00ebsht\u00eb em\u00ebruar\n --shtoni dokumentin n\u00eb p\u00ebrzgjedhje\n IF doc_man_id != curr_pid OR doc_man_id IS NULL\n THEN\n   RETURN TRUE  ;\n ELSE\n   --Merrni statusin aktual t\u00eb dokumentit\n   SELECT\n     stat_id                                         \n   INTO\n     curr_statid\n   FROM\n     store.docs\n   WHERE\n     id = current_id ;\n    \n   --N\u00ebse statusi lejon t\u00eb shikoni dokumentin - shtoni dokumentin n\u00eb p\u00ebrzgjedhje                     \n   IF curr_statid = 4 OR curr_statid = 9\n   THEN\n     RETURN TRUE ;\n   ELSE\n   --P\u00ebrndryshe - p\u00ebrjashtoni dokumentin nga p\u00ebrzgjedhja\n     RETURN FALSE ;\n    END IF ;\n  END IF ;\n  --------------------------------\n\n RETURN FALSE ;\nEND\n$$ LANGUAGE plpgsql SECURITY DEFINER;\nALTER FUNCTION store.check_select( store.docs.id%TYPE  ) OWNER TO store ;\nREVOKE EXECUTE ON FUNCTION store.check_select( store.docs.id%TYPE  ) FROM public; \nGRANT EXECUTE ON FUNCTION store.check_select( store.docs.id%TYPE  ) TO service_functions; \n<\/code><\/pre>\n
\nKontrolloni mund\u00ebsin\u00eb p\u00ebr t\u00eb kryer INSERT t\u00eb nj\u00eb rreshti<\/p>\n
                        kontrollo_insert<\/b><\/p>\n
KRIJO OSE Z\u00cbVEND\u00cbSO FUNKSIONIN store.kontrollo_insert ( current_id store.docs.id%TYPE ) KTHEN boolean AS $$\nDECLARE\n  curr_role_id integer ;\nBEGIN\n  --DBA mund t\u00eb shtoj\u00eb rreshta n\u00eb \u00e7do rast\n  IF SESSION_USER = 'curr_dba'\n  THEN\n    KTHE TRUE ;\n  END IF ;\n  --------------------------------\n\n --Merrni id-n\u00eb e rolit t\u00eb p\u00ebrdoruesit aktual\n SELECT\n   service_functions.current_rid()\n  INTO\n    curr_role_id ;\n --------------------------------\n\n--N\u00ebse roli lejon krijimin e nj\u00eb dokumenti t\u00eb ri\n--lejoni\nIF curr_role_id = 3 OR curr_role_id = 5     \nTHEN\n  KTHE TRUE ;\nEND IF ;\n--------------------------------\nKTHE FALSE  ;\nEND\n$$ GJUHA plpgsql DEFINUES I SIGURIS\u00cb;\nNDYSHO FUNKSIONIN store.kontrollo_insert( store.docs.id%TYPE  ) PRONARI TE store ;\nHEQ EXECUTIMIN N\u00cb FUNKSIONIN store.kontrollo_insert( store.docs.id%TYPE  ) NGA publiku;\nJEP EXECUTIMIN N\u00cb FUNKSIONIN store.kontrollo_insert( store.docs.id%TYPE  ) TE service_functions; \n<\/code><\/pre>\n
\nKontrolloni mund\u00ebsin\u00eb p\u00ebr t\u00eb kryer DELETE t\u00eb nj\u00eb rreshti<\/p>\n
                        kontrollo_fshirjen<\/b><\/p>\n
KRIJO OSE Z\u00cbVEND\u00cbSO FUNKSIONIN store.kontrollo_fshirjen ( current_id store.docs.id%TYPE )\nKTHEN boolean AS $$\nBEGIN  \n  --Vet\u00ebm DBA mund t\u00eb fshij\u00eb nj\u00eb rresht \n  IF SESSION_USER = 'curr_dba'\n  THEN\n    KTHE TRUE ;\n  END IF ;\n  --------------------------------\n\n  KTHE FALSE ;\nEND\n$$ GJUHA plpgsql\nDEFINUES I SIGURIS\u00cb;\nNDYSHO FUNKSIONIN store.kontrollo_fshirjen( store.docs.id%TYPE  ) PRONARI TE store ;\nHEQ EXECUTIMIN N\u00cb FUNKSIONIN store.kontrollo_fshirjen( store.docs.id%TYPE  ) NGA publiku;<\/code><\/pre>\n
\nKontrolloni mund\u00ebsin\u00eb p\u00ebr t\u00eb kryer UPDATE t\u00eb nj\u00eb rreshti.<\/p>\n
                        p\u00ebrdit\u00ebso_p\u00ebrdorimin<\/b><\/p>\n
CREATE OR REPLACE FUNCTION store.update_using ( current_id store.docs.id%TYPE , is_del boolean  )\nRETURNS boolean AS $$\nBEGIN  \n   -- Dokumentet me status 't\u00eb fshir\u00eb' nuk mund t\u00eb redaktohen\n   IF is_del \n   THEN\n     RETURN FALSE ;\n ELSE\n    RETURN TRUE ;\n  END IF ;\n\nEND\n$$ LANGUAGE plpgsql SECURITY DEFINER;\nALTER FUNCTION store.update_using(  store.docs.id%TYPE ,  boolean  ) OWNER TO store ;\nREVOKE EXECUTE ON FUNCTION store.update_using(  store.docs.id%TYPE ,  boolean  ) FROM public;\nGRANT EXECUTE ON FUNCTION store.update_using( store.docs.id%TYPE  ) TO service_functions;<\/code><\/pre>\n
<\/p>\n
                        update_check<\/b><\/p>\n
CREATE OR REPLACE FUNCTION store.update_with_check ( current_id store.docs.id%TYPE , is_del boolean )\nRETURNS boolean AS $$\nDECLARE\n  current_rid integer ;\n  current_statid integer ;\nBEGIN                \n\n  --DBA mund t\u00eb shikoj\u00eb rreshtin \n  IF SESSION_USER = 'curr_dba'\n  THEN\n    RETURN TRUE ;\n  END IF ;\n  --------------------------------\n\n --Merr id-n\u00eb e rolit t\u00eb p\u00ebrdoruesit aktual \n SELECT\n   service_functions.current_rid()\n  INTO\n    curr_role_id ;\n --------------------------------                            \n\n --Fshirja e dokumentit - ndryshimi i karakteristik\u00ebs \n IF is_deleted\n THEN\n   --N\u00ebse roli i p\u00ebrdoruesit ***\n   IF current_role_id = 3        \n   THEN\n      SELECT\n        stat_id                                          \n      INTO\n        curr_statid\n      FROM\n        store.docs\n      WHERE\n        id = current_id ;\n\n      --Dokumenti n\u00eb statusin *** nuk mund t\u00eb fshihet \n      IF current_status_id = 11\n      THEN\n         RETURN FALSE ;\n      ELSE\n      --Mund t\u00eb fshihet dokumenti n\u00eb statuse t\u00eb tjera\n        RETURN TRUE ;\n      END IF ;\n\n    --P\u00ebrndryshe, n\u00ebse roli i p\u00ebrdoruesit ***\n    ELSIF current_role_id = 5            \n    THEN\n      --T\u00eb gjitha statuset e dokumentit \n      RETURN TRUE ;\n    ELSE\n      --P\u00ebrdoruesit e tjer\u00eb nuk mund t\u00eb fshijn\u00eb dokumente\n      RETURN FALSE ;\n    END IF ;\n ELSE      \n   --P\u00ebrdit\u00ebsimi i dokumentit \u00ebsht\u00eb i lejuar\n    RETURN TRUE ;\nEND IF ;\n\nRETURN FALSE ;\nEND\n$$ LANGUAGE plpgsql SECURITY DEFINER;\nALTER FUNCTION store.update_with_check( storg.docs.id%TYPE ,  boolean   ) OWNER TO store ;\nREVOKE EXECUTE ON FUNCTION store.update_with_check( storg.docs.id%TYPE ,  boolean   )  FROM public;\nGRANT EXECUTE ON FUNCTION store.update_with_check( store.docs.id%TYPE  ) TO service_functions;<\/code><\/pre>\n
\nAktivizimi i politik\u00ebs s\u00eb Siguris\u00eb n\u00eb Nivelin e Rreshtit p\u00ebr tabel\u00ebn.<\/p>\n
                        AKTIVIZO SIGURIS\u00cbN N\u00cb NIVELIN E RRESHTIT<\/b><\/p>\n
ALTER TABLE store.docs AKTIVIZO SIGURIS\u00cbN N\u00cb NIVELIN E RRESHTIT ;\n\nKRIJO POLITIK\u00cb doc_select N\u00cb store.docs P\u00cbR ZGJEDHENI TE service_functions P\u00cbRDORIMI ( (ZGJEDHJE store.check_select(id)) );\nKRIJO POLITIK\u00cb doc_insert N\u00cb store.docs P\u00cbR SHTIM TE service_functions ME KONTROLL ( (ZGJEDHJE store.check_insert(id)) );\nKRIJO POLITIK\u00cb docs_delete N\u00cb store.docs P\u00cbR FSHIRJEN TE service_functions P\u00cbRDORIMI ( (ZGJEDHJE store.check_delete(id)) );\n\nKRIJO POLITIK\u00cb doc_update_using N\u00cb store.docs P\u00cbR P\u00cbRDIT\u00cbSIM TE service_functions P\u00cbRDORIMI ( (ZGJEDHJE store.update_using(id , is_del )) );\nKRIJO POLITIK\u00cb doc_update_check N\u00cb store.docs P\u00cbR P\u00cbRDIT\u00cbSIM TE service_functions ME KONTROLL ( (ZGJEDHJE store.update_with_check(id , is_del )) );<\/code><\/pre>\n
<\/p>\n
P\u00ebrfundimi<\/h2>\n
\nKjo funksionon.<\/p>\n
Strategjia e propozuar lejoi transferimin e zbatimit t\u00eb modelit t\u00eb rolit nga niveli i funksioneve t\u00eb biznesit n\u00eb nivelin e ruajtjes s\u00eb t\u00eb dh\u00ebnave. <\/p>\n
Funksionet mund t\u00eb p\u00ebrdoren si nj\u00eb model p\u00ebr zbatimin e modeleve m\u00eb t\u00eb avancuara t\u00eb fshehjes s\u00eb t\u00eb dh\u00ebnave, n\u00ebse k\u00ebrkesat e biznesit e k\u00ebrkojn\u00eb k\u00ebt\u00eb.
\n
Burimi: habr.com<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"
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